Specialists from Yale University in USA has developed a special mathematical model. Its purpose is to calculate the selfish and true volunteers. The results of this work tells the newspaper The Daily Mail.
In the basis of the model of lay knowledge in the field of evolutionary game theory and behavioral Economics. Volunteers asked to choose whether they want to interact with a stranger. Depending on the situations or the people immediately agreed to help, or ranged, others will certainly abandon the joint work in the absence of obvious personal gain.
The researchers concluded: people who trust their instincts, are not selfish. Usually such persons have many friends and are often at the center of the company. If a person does not help another, then, most likely, and assistance in case of need will not receive.